The Tradition of such guhya or secretive Bhairava is really an oral tradition that is continuing in the Expert disciple tradition. Their karmakand rituals and methods are mystery, they're not published down but only learnt and practiced in Expert disciple custom. The phrase ‘Bhairava’ originates within the Sanskrit term ‘Bhiru,’ https://www.youtube.com/shorts/0vLISs2kzMI